CN2615415Y - Antiturning screw against unauthorised operation - Google Patents
Antiturning screw against unauthorised operation Download PDFInfo
- Publication number
- CN2615415Y CN2615415Y CN 03229981 CN03229981U CN2615415Y CN 2615415 Y CN2615415 Y CN 2615415Y CN 03229981 CN03229981 CN 03229981 CN 03229981 U CN03229981 U CN 03229981U CN 2615415 Y CN2615415 Y CN 2615415Y
- Authority
- CN
- China
- Prior art keywords
- screw
- helical surface
- screw head
- helicoid
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an anti-rotating screw for anti-theft, comprising a screw head and a thread portion, wherein the screw head portion are two equal upward helical surface sections, the two helical surface sections are end-to-end connected, and directions of spiral of the helical surface and the thread portion are same. The intermediate portion of the helical surface of the screw head is provided with a hole. When the screw is tightly spiraled, a common parallel screwdriver can rotate as long as fastened on high portion of the two helical surfaces, and in disassembling, as working face employs helical surface, the prior tools are not used with anti-theft effect. The center of the screw head is provided with a hole for facilitating maintenance and only a special triangular spanner is needed in disassemble. The utility model has the advantages of novel design, reasonable structure, not only not damaging screw, but also having anti-theft effect, and bringing great convenience for users.
Description
Technical field
The utility model belongs to a kind of screw, particularly to the improvement of anti-theft screw structure.
Background technique
The existing anti-all kinds of screws of usurping, its structure is made up of screw terminal and helical thread portion, and its screw head structure is crosshead, flat head, hexagon socket head etc.As being used as antitheft effect, the method for taking all is based on the destruction screw terminal, or heads into the metal in jam bolt hole in screw terminal, dismantles to prevent other people.The problem of existing structure is: when going wrong, screw terminal is destroyed or head into the structure of metal in screw hole, and dismounting is very difficult, is not easy to operation, makes troubles to use.
Summary of the invention
The utility model provides a kind of anti-anti-rotation screw of usurping of new structure, changes the shape of existing screw terminal, and screw head is the helicoid that two equal segments rises, two sections helicoid end-to-ends; Helicoid is identical with the Hand of spiral of helical thread portion.
The middle part of screw head helicoid has the hole.
When screwing screw, it is promptly rotatable to use common straight screwdriver to be stuck in the eminence of two helicoids; And when dismounting, because of working surface has adopted helicoid, existing instrument just can not use, and has played antitheft effect.For the ease of maintenance, have the hole at the screw terminal center, when needs are dismantled, use special-purpose triangle spanner dismounting to get final product.
The utility model modern design, rational in infrastructure, neither destroy screw, can play antitheft effect again, bring great convenience to use.
Description of drawings
Accompanying drawing 1 is the utility model structural front view.
Accompanying drawing 2 is Fig. 1 worm's eye views.
Accompanying drawing 3 is Fig. 1 side views.
Accompanying drawing 4 is the utility model three-dimensional structure diagrams.
1 screw terminal, 2 helical thread portions, 3 helicoids, 4 holes.
Embodiment
Prevent usurping the anti-rotation screw, be made up of screw terminal 1 and helical thread portion 2, screw head is 3, two sections helicoid end-to-ends of helicoid that two equal segments rises; Helicoid is identical with the Hand of spiral of helical thread portion.The middle part of screw head helicoid has hole 4.
Claims (2)
1, a kind ofly anti-usurps the anti-rotation screw, forms, it is characterized in that screw head is the helicoid of two equal segments rising, two sections helicoid end-to-ends by screw terminal and helical thread portion; Helicoid is identical with the Hand of spiral of helical thread portion.
2,, it is characterized in that the middle part of screw head helicoid has the hole according to claim 1 described with anti-usurp the anti-rotation screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03229981 CN2615415Y (en) | 2003-04-02 | 2003-04-02 | Antiturning screw against unauthorised operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03229981 CN2615415Y (en) | 2003-04-02 | 2003-04-02 | Antiturning screw against unauthorised operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2615415Y true CN2615415Y (en) | 2004-05-12 |
Family
ID=34247439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03229981 Expired - Fee Related CN2615415Y (en) | 2003-04-02 | 2003-04-02 | Antiturning screw against unauthorised operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2615415Y (en) |
-
2003
- 2003-04-02 CN CN 03229981 patent/CN2615415Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |